Crusher.



R. LNN.

cRfusHER.

APPLICATION FILED APR-2`1909.

Lm Patented Dec. 28, 1915.

3 SHEETS-SHEET l.

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R. UNN.-

CHUSHER.

APPLICATION FILED APR.2. 1909. yam K Patented D60. 28, 1915.

3 SHEETS-SHEET 2.

R. LINN.

CR'USHER. I

APPLICATION FILED APII.2. 1909.

LMAU. Patented Dea 28, 1915.

3 SHEETS-SHEET 3.

P5 mgm www@ Llltll Alti RUBBER@ LENN, 0F CHICGO, ILLINOJS, ASSIGNOR OFONE-FOURTH T0 FRIED C. EDLEE AND @NIE-FOURTH T0 JACOB ALTER, OlECHICAGO, ILLIN 01S.

CRUSHER.

Specication of Letters Patent.

Patented Dee. 29, ll91l5.

To all whom t may concern:

lBe it known that l, ROBERT LINN, a citizen of the United States,residing at Chicago, in the county of Cook and State of lllinois, haveinvented certain new anduse ful Improvements in Crushers, of which thefollowing is a specification.

This invention relates more particularly to apparatus or machines usedfor crushing rock, ores, bones, or other materials. lits ob jects are toprovide a machine of this character which will have exceedingly fewparts which are liable to become loosened when the machine is inoperation, which will be rigid and substantial in construction, whichwill be adapted to receive large pieces of rock or ore in proportion ltothe size of the machine, which will have a novel and etlicient crushingaction, which can be driven4 4with a comparatively small amount ofpower, and one in which the operative parts are well protected from dustor broken ore.

l attain these objects and such other advantages as may appearhereinafter by means of the machine or apparatus shown in theaccompanyingdrawings, in which- Figure 1 is a vertical section through acrusher embodying my invention; Fig. 2 is a detail showing the method oflocking the outer dome or caslng in position; Fig. 3 is a detail showingthe bottom of a removable feed opening liner; Fig. L is a perspectiveview of the bottom frame or support of the machine, parts being brokenaway to show the interior construction; Fig. 5 is a detail showing theoperation of the Crusher dome actuating toggles; and Fig. 6 is a topplan view of the lower portion of the machine, with parts removed toshow the vposition of the toggles.

As shown in these drawings, 7 indicates the base or lower part of themachine frame. The upper part 8 of the base 7 is preferably madecylindrical in form and is adapted to engage@ closely with the innerperiphery of the lower end of the upper cap or dome shaped casing 9.These two members may be secured together in any desired manner, but lprefer to provide the outer casing 9, at its lower end, with threads 10which engage with threaded posts or standards 11 extending upwardly fromthe base 7. In order to turn the outer casing 9 to adjust its positionwith respect to the base 7, it is provided aroundits lower edge withindentations in.,

order to .form lugs 12 which may be engaged by means of a bar, thearrangement being .such that the end of the bar may be inserted 1n theapertures between said lugs and the sldes of the standards 11 used asfulcrums against which the bar may be pressed in order toturn the dome.After the dome has been adjusted to its desired position, as forregulating the size of the material to be crushed, as will be explainedhereinafter, it 1s locked in position by means of a lock nut or ring 13which is also provided with lugs'14, so that it may be turned to engageclosely with the lower edge of the dome 9. The upper end of the dome orcasing 9 is formed in the shape of an inverted cone to form a feedhopper or opening 15. The inner walls of this cone may be protected andthe size of the opening varied by having liner `cones 16 of differentthicknesses. lln order to hold these cones in position against theupward thrust of the material in the Crusher, the outer surface isprovided with lugs 17 adapted to engage with suitable correspondinglyshaped lugs 18 on the inner surface of the upperend of the casing 9 inorder to form a bayonet joint between these parts. The inner surface ofthe main portion of the dome or casing 9 is provided with a lining 19preferably made of some highly resisting material if the Crusher is tobe used for crushing hard rock orl the like, which lining may be readilyremoved and replaced after it becomes Worn. rlhis lining is held inposition by means of wedges or keys 20, said Wedges being securelylocked lary melans of pins or keys 21, as indicated in The rock ormaterial to be crushed is broken by being engaged between the innerwalls of the liner 19 and the upper surface of a movable inner dome 22.The dome 22 is formed with its upper surface of suitable pitch orcontour to give the best results'with the different materials tobeoperated upon. This dome is reciprocated vertically through a shortdistance in order to give the crushing action between it and the outerdome or casing. To this end it rests uppn a ring 23 which is slidablymounted on a'sleeve or bearing 24, this ring being preferably made inthe form of a wheel with spokes extending out from the central bearingportion to the outer part of the ring. rlhe central portion of the ring23 is pressed downwardly vided, at its lower end, with a gear 31 meshingwith a pinion 32 on a drive shaft 33 which may be drivenl ,from any.suitable source of power. This drive shaft is preferably provided withbearings 34 formed in the base 7.

The central dome or crushing member 22 may be given its reciprocatingvertical movement in any desired manner, and for this purpose Ihaveprovided the shaft 29 with a plurality of eccentrics 35, eacheccentric being provided with an eccentric strap 36 connecting 4with ashort connecting rod, or eccentric rod, 37 which in turn is pivotallyconnected with a horizontally movable block 38. The blocks 38 arerecessed above and below to receive toggle members 39 and 40. Each ofthe lower toggle members 40 has its opposite end resting in a suitablerecess in an upwardly projecting support 41 from the bottom of thechamber 28. Each of the upwardly extending toggle members 39 has itsupper end resting in a suitable recess in a downwardly projectingsupport 42 from the lower side of the ring 23. In order to prevent theblocks 38 from moving laterally, they are preferably supported by meansof guides 43 extending inwardly from-the inner wall of the chamber 28,as indicated in Fig. 6. The operation of these toggle members will bereadily understood from the illustration in Fig. 5 which shows theeccentric in full lines in its outermost position, in which position theblock 38 is moved so that the toggle members stand vertically, raisingthe dome or crushing member 22 to its highest position. The dottedlinesshow the eccentric in retracted position when the adjacent ends of thetoggle members are moved inwardly, thereby allowing the ring 23, withthe Vdome 22, to move downwardly. Of course, if desired, the throw ofthe eccentric might be increased, or the position of the togglesarranged so that a double movement would be given to the dome at eachrevolution of the eccentric.

The cover plate 27 is locked in position by means of hook shaped lugs 44which engage with inwardly extending lugs 45 on the inner walls of thechamber 28. In order to prevent the plate from rotating after the lugshave become engaged, I provide a pivoted tongue 46...,which drops downbe tween outwardly extending lugs or projections 47, as indicated inFig. l.

In order to make the chamber 28 as nearly dust-proof as possible, theholes in the cover thereof, through which the supports 42 extend, may beprovided with covers of felt or other suitable material, as indicated at48.

As the material is crushed between the inner and outer domes, it passesdown between the annular space between said domes onto lateral dischargechutes 49 and 50 and is discharged through outlet apertures 5l and 52.The discharge chutes 49 and 50 are preferably made integral with thebase 7 and outer walls of the chamber 28 and serve to strengthen boththe base and said walls. The large annular discharge opening between thecrushing members allows the crushed material to pass rapidly away,vthereby enabling the machine to deliver an unusually large amount ofmaterial. It will be particularly noted that this discharge opening ismuch larger than ordinarily provided with rectangular jaw Crushers.

Having thus described my invention, which I do not wish to limit to theexact details of construction or arrangement of parts shown anddescribed, what I claim and desire to secure by Letters Patent is:

1. In a crusher, the combination of an outer stationary crushing memberhaving a feed opening in the top thereof, an inner vertically movablecrushing member arranged concentrically with the outer member, a centralguide for..said inner member located wholly within or below the same, aplurality of toggles.v arranged adjacent to the outer periphery .of theinner member for supporting and actuating the same, and means connectedto and operating said toggles. t"

2. In a crushing machine, the combination of a base, an outer crushingmember secured to said base, said member being approximatelyhemispherical in shape, a feed hopper in the top of said member, a shaftmounted in said base, eccentrics on said shaft, toggles actuated by saideccentrics, and an inner crushing member supported on said toggles andadapted to be actuated thereby.

3. In a crusher of the character described,

vthe combination of a base, a drive shaft mounted in said base, acentral chamber in said base, having shaft bearings in the top andbottom thereof, a shaft mounted in said bearings, means for turning saidshaft from the drive shaft, a'ring slidably mounted on the upper shaftbearing, a spring for pressing said ring downwardly, a crushing membermounted on said ring, toggles supporting said ring from the bottom ofsaid chamber, means for actuating said toggles from eccentrics on saidshaft, an adjustable outer casing secured to said base, a. feed hopperniega-oa for said casing, linings for said casing, and discharge chutesarranged in said base for receiving the material discharged around theannular space between the inner crushing member and the inner lining:tor said casing and discharging it laterally from said space.

fl. ln a roclr crusher, the combination of a base, standards extendingupwardly from said base and having internal segmental threads forreceiving the threads on the dome, and an upper casing or dome providedwith threads adapted to engage with said standards.

5. ln a rock Crusher, the combination of v a threaded base portion, anadjustable upper dome having threads adapted to engage with saidthreaded base portion, and a locking ring tor locking said dome inpositionn 6, lln a crushing machine, the combination of a base having aninternal chamber with discharge passageways between the chamber and theouter portion of the base, a shaft mounted in said chamber, eccentricson said shaft, a plurality of toggle supports in said chamber, togglesmounted on said supports, connections from said eccentrics to thetoggles, a cover for said chamber, a vertically movable crushing membermounted above said cover and having its periphery registering with thedischarge passageways, con nections from said toggles to said crushingmember, means for turning said shaft to actuate the toggles andreciprocating said crushing member, and an outer crushing member securedto said base and co-acting with said rst named crushing member.

7., ln a crusher, the combination of a base having an outer shell and aninner chamber with discharge passageways between said shell and chamber,supports in said chamber, a vertical shaft mounted in said chamber, acover for said chamber having holes therethrough, eccentrics on saidshaft, eccentric rods extending from said eccentrics, toggle blocksconnected with said rods, guides for said blocks, toggle arms betweenthe blocks and the supports, toggle arms eX- tending upwardly from saidblocks, a ring having projections extending through said holes andengaging with the upwardly eX- tending toggle arms, a crushing memberengaging with said ring and having its outer periphery registering withthe discharge passageways, a co-acting crushing member adjustablyconnected with said base, and means for turning said shaft.

8. lin a Crusher, the combination of a base, a horizontal driving shaftmounted in said base, a central chamber in said base with dischargepassageways between the chamber and the outer portion of the base, avertical shaft mounted in said chamber, gears connecting said drivingshaft and said vertical shaft, a crushing dome above said chamber, withits outer periphery registering with the discharge passageways, togglesin said chamber for supporting and actuating said dome, eccentrics onsaid vertical shaft, connections between said eccentrics and the togglesfor actuating the toggles, means for forming a substantially tightclosure at the top of the chamber, threaded arms extending upwardly fromsaid base, an outer casing connected with said base and having threadsengaging with said arms, lugs on said casing for turning the same, athreaded lock ring engaging with said arms, lugs on said lock ring forturning the same, and a crushing lining in said outer casing, whichco-acts with the dome.

RBERT lLllNN.

Witnesses:

CARL H. Cnawronn, @L W., lFnNsTnMAnER.

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